Electrical relay.



J. ERIGKSON.

ELECTRICAL RELAY.

APPLICATION FILED NOV. 28, 1900.

Patented Sept. 15, 1914 UNITED STATES PATENT OFFICE.

JOHN EZKKEKSQN, OF CHICAGO, ILLZWOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO FIE-1ST TRUST AND SAVING-S BANK, TRUSTEE, OF CHICAGO, ILLINOIS.

ELECTRICAL RELAY.

Specification of Letters Patent.

Application filed November 28, 1906.

Patented Sept. 15, 1914.

Serial N0. 345,432.

To (2/? WIN/Wt '1' 6 may com-em lie it known that I, JUIIN llmensow. a citizen of the United States of Amerii-zn and resident of Chicago, (look eounty .lllinois, hare invented a certain new and useful lmproi'emeut in Eleotrieal l'lelays of which the following is a specific-alien).

My invention relates to relays for con trolling the eireuits of elerrtriml apparatus. In relays of this el'iaraeter it is common to use plfil'il'llll 'l contacts, against whirh the relay springs are press-sod in order to close the circuits. F or reasons which will be well understood, it is necessary at times to clean and perha renew these contacts. In order to facilitate such cleaning and renewal of the platinum contacts. l provide a metal platirmm holder haying the platinum points or contacts thereon, and a spring mounting in which the said platinum holder is removably supported. iVith this arrangement the platinum holder or portion-hearing platinum contacts is easily inserted andremoved, thus facilitating inspeetion for purposes of Cleaning or repairing.

The nature and at vantages of my invention, however. will hereinafter more fully appear.

in the aeemnpuli ing drawings. l igure 1 shows a pair of 1:0 I 'atiu relays of the ebaraeter employed, for in ,anre. in the automatic SalPCLb-i' and roi'nieetor switehes of an automatic telrplnnie exchange system. l ig. 5:. =1 pei'i-, ieei\'e View of the relay springs and einjiiarl the same being orgai'iized into whirh isoremmable as unit. pea-tire of the spri e mourning in rho iilatinum holder. Fig. i is a sz-rspe Eve of the said removable platinum holder. 1

As thus iilusirated the relay magnets A can be of any suit i e, known or approved eons'iruxtioni and z be provided with suitable armatures a. it will be seen that the magnet mountings (I?! are bent upwardy to support the said armaiures. and are preferably connected to ether by si-rews or bolts (1?. .ietween these magnet mountings are elann'ied the superimposwl layers of insulation B and the contact springs operated by the said armalures. The flexible or mov able'springsl are provided with t-ermii'zals e. The spring mounting I) provided with a terminal (Z, and also with inner and outer clamping or gripping portions d, i and It will be seen that the faces of these clamping or gripping portions are slightly recessed to receive the Hat and preferably pointed end portion e of the platform holder E. A lug or small rounded portion 0 on said holder engages the inner edge of the spring portion d, as shown in Fig. 2, to prevent displacement of the platinum holder. it will also be seen that the said holder E is provided with stops 6 for limiting the insertion of same in the spring mounting D. The outer portion 6 of said holder is provided with oppositely projecting'platinum Joints 6 ada ited to be en a ed by the flexible. relay springs C. In this way the relay springs and the removable platinum holder and the spring mounting for the latter are all clamped together by the bolts (l and thus organized into a structure which is removable as a unit from the balance of the relay mechanism. Should the said platinum points become impaired in any Way, the holder E can easily be removed to permit. repairing of. the said platinum points. or to permit the insertion of a new holder. Thus it is not necessary to take the relay structure apart in order to remove the platinum-be; ring member or holder thereof.

It will be understood, of course, that the eontaets or anyils e of the relay can be made of any suitable eondueting material.

\Vhat l ('laim as my invention is l. A relay provided with a removable and slidable holder having platinum contacts and flexible eircuit-closing springs adapted to be pressed into engagement with the said platinum contacts by the energizing of the relay.

2. A relay comprising a removable e011- taet member. a spring mounting from which the said contact member is readily ren'iovable. .and a movable circuit-closing lll0lnl)( adapted to be pressed into engagementwith the said Contact member by the energizing of the relay.

3. A relay comprising a spring mounting having opposed clamping or recessed gripnn' )ortions. a holder removabl inserted I Z" in said clamping or gril'iping portions, :1 eontart earried by said holder, and a circuitelosing nembeadapted to be pressed into engagement with the said contact by the energizing of the relay.

4. In a. relay,'the combination of a spring mounting, a contact member removably inserted in said spring mounting, and a circuit-closing member adapted to be pressed into engagement with the said contact member.

5. A relay provided with a group of switch springs and contacts which are removable therefrom as a unit, including a removable contact member and a spring the said contact member by the energizing of the relay.

' 8. A relay comprising a spring mounting having opposed clamping or recessed gripping portions, a holder slidably inserted in said clamping or gripping portions, a contact carried by said holder, and a circuitclosing member adapted to be pressed into engagement with the said contact by the energizing of the relay.

9. In a relay,the combination of a spring mounting, a contact member slidably inserted in said spring mounting, and a circuit-closing memb, adapted to be pressed 1 into engagement with the said contact mom:

ber.

10. A relay provided with a group of switch springs, contacts winch are removable therewith as a unit, including a slidable l i i l contact member and a spring mounting for the same.

11. In a relay, a removable contact member provided with a lug, and spring means engaging said lug, whereby the lug and spring cooperate to removably hold the contact member in place.

12. A. plurality of electrical circuit-closing springs, strips of insulation interposed between the same, means for binding the superimposed contact springs and strips of insulation together, and a stationary contact member removably applied to a plurality of said springs and adapted to cooperate with one or more of the other springs in closing electrical circuits.

13. In a relay, one or more movable circuit-controlling springs, a stationary contact member extending at right angles to said spring or springs, so that each crossed the other, and means whereby said contact member is insertible and removable in an endwise direction.

14. In a relay, a spring plate provided with oppositely-facing spring clamping portions, a. contact member inserted between said oppositely-facing spring portions, and removably held thereby, and means adapted to engage said contact member to close an electrical circuit.

15. In a relay, a stationary contact or anvil, one or more movable springs for engagement with said contact or anvil, disposed crosswise thereof, and means whereby said contact or anvil is removable independently of and without disconnecting said springs.

Signed by me at Chicago, Cook county, Illinois, this 24th day of November, 1906.

' JOHN ERICKSON.

WVitnesses:

EDWARD D. FALES, BERNARD D. VVrLLIs. 

